Notes from Dr. Borkosky

The 7mm RUM was created using the .404 Jeffery case[citation needed]which was also used to develop the .375 RUM .300 RUM, and .338 RUM[citation needed]. History Inspired by the Lazzeroni proprietary cartridges, Remington introduced the 7mm Remington Ultra magnum in 2000. [1] All of the RUM cartridges are based on the .404 Jeffery non-belted magnum cartridge.

Released in 1999, the.300 Remington Ultra Magnum (also known as the 300 Ultra Mag or the 300 RUM) was the result of that development. That said, some rifle brands/models in standard-length can accommodate magnum length cartridges if bullets aren’t seated out too far. The 7mm Remington Ultra Magnum or 7mm RUM is a 7mm rifle cartridge introduced by Remington Arms in 2001. Win A DSA SA58 FAL Rifle w/ EOTech XPS3 Holographic Sight ($3500 Value!). The Delta L problem article explains this problem in more detail. Remington built the.300 Ultra Mag using a modified.404 Jeffery case necked down to use.308″ bullets, slightly shortened to 2.85″, and blown out to maximize case capacity. JavaScript seems to be disabled in your browser. Win A DSA SA58 FAL Rifle w/ EOTech XPS3 Holographic Sight ($3500 Value!

The 300 Rem Ultra Magnum COL is 3.6″. Reloading Supplies, Shooting Supplies, Reloading Tools. Be the first to know about sales, surplus items, and new products. Generally, short-actions take cartridges up to 2.8″; standard actions 3.34″, magnum actions 3.6″. Sort By: 9 Item(s) Show. All Rights Reserved. 300 Rem Ultra Mag Rifle Ammo Midsouth offers great deals on all kinds of 300 Rem Ultra Mag Centerfire Rifle Ammo, also known as 300 RUM ammo. Learn how and when to remove this template message, http://www.ballisticstudies.com/Knowledgebase/7mm+Remington+Ultra+Magnum.html, https://en.wikipedia.org/w/index.php?title=7mm_Remington_Ultra_Magnum&oldid=985962176, Articles lacking in-text citations from September 2014, Articles with unsourced statements from December 2018, Articles with unsourced statements from September 2010, Articles needing additional references from September 2014, All articles needing additional references, Creative Commons Attribution-ShareAlike License, This page was last edited on 29 October 2020, at 00:12. We use cookies on this site to improve your experience. 7mm Rem Ultra Mag (RUM) Ammunition (9 Products) Filter By . [citation needed] Such performance demands a price and in this case, that is a large muzzle blast, sharp recoil and short barrel life.[1]. For the fastest delivery, select Express Shipping at Checkout. We're here for you. and the Cheaper Than Dirt symbol are registered trademarks of Direct Investments LTD. America's Ultimate Shooting Sports Discounter. The short design is the same idea as used in the Winchester Short Magnum cartridges. Enfield #4 Surplus Rifles - Only $449.99! We HIGHLY recommend contacting your FFL before placing your order. | Mon - Fri | 8am to 5pm CST. By necking down the .300 RUM to suit the .284 or 7mm projectile, Remington produced a non-belted case with a head diameter that is somewhat larger than belt diameter of original belted numbers. The long case is very large and provides performance that exceeds existing commercial magnums, such as the .300 Winchester Magnum and .300 Weatherby Magnum. Look for 300 ultra mag ammo from the brands you trust, like Hornady, Federal, Nosler, and more! Choose from thousands of products and deals, directly from our warehouse @ AmmoFreedom.com, The .300 Remington Ultra Magnum is a centerfire rifle cartridge, Click here for instructions on enabling javascript in your browser, Birchwood Casey Big Burst 12in Sight-In Bullseye Self-Adhesive 3-Pack [36213], Birchwood Casey Big Burst 3in Bullseye Self-Adhesive 16 Per Page/3 Pages [36348], Birchwood Casey Darkotic Fine Print Splattering Target 12x18 8-Pack [35645], Birchwood Casey Darkotic Shopping Spree Splattering Target 12x18 8-Pack [35665], Birchwood Casey Dirty Bird 12in Targets 12-Pack [35012], Birchwood Casey Dirty Bird 12x18 Silhouette 8-Pack [35608], Birchwood Casey Dirty Bird 3D Shadow 8-Pack [35708], Birchwood Casey Dirty Bird Bulls-Eye Targets 8 Pac [35908], Birchwood Casey Dirty Bird Multi-Color Splattering Targets 12-Pack [35830], Birchwood Casey Dirty Bird Shadow 12x18 8-Pack [35707], Birchwood Casey Dirty Bird Sight-In 12in Target 12-Pack [35212], Birchwood Casey Dirty Bird Target 3in 12-Pack [35309], Birchwood Casey Dirty Bird Target 5.5in 12-Pack [35504], Birchwood Casey Dirty Bird Targets 8in 25-Pack [35825], Birchwood Casey Double Mag Spinner Targets [46244], Birchwood Casey Duplex Spinner Targets [46422], Birchwood Casey EZE-Scorer 12in Paper Targets 13-Pack [37213], Birchwood Casey Pregame Deer 16.5x24 3-Pack [35401], Birchwood Casey Pregame Turkey 12x18 8-Pack [35403], Birchwood Casey Qualifier Spinner Targets [46322], Birchwood Casey Sharpshooter Plastic IPSC Target [38459], Birchwood Casey Sharpshooter Prairie Chuck Target Kit [38774], Birchwood Casey Sharpshooter Spinner Targets 1 [46221], Armscor Ammo 300 RUM 180 Grain AccuBond [FAC300RUM180GRABTC], Barnes Ammo Vor-Tx 300 RUM 165 Grain TSX Boat Tail [21571], Barnes Ammo Vor-Tx 300 RUM 180 Grain TSX Boat Tail [21539], Barnes Ammo Vor-Tx 300 RUM 190 Grain LRX BT [29011], Federal Ammo Vital-Shok 300 RUM 180 Grain Nosler AccuBond [P300RUMA1], Federal Ammo Vital-Shok 300 RUM Trophy Bonded Tip 180 Grain [P300RUMTT1], Hornady Ammo ELD-X 300 RUM 220 Grain ELD-X [8209], Hornady Ammo GMX 300 RUM 180 Grain GMX [8207], Hornady Outfitter Ammo 300 RUM 180 Grain GMX 20 Rounds [8208], HSM Ammo Game King 300 RUM 150 Grain SBT [300RU11N], HSM Ammo Game King 300 RUM 165 Grain SBT [300RU12N], HSM Ammo Game King 300 RUM 180 Grain SBT [300RU13N], HSM Ammo Game King 300 RUM 200 Grain SBT [300RU14N], HSM Ammo Trophy Gold 300 RUM BTHP 168 Grain [BER300RUM168VLD], HSM Ammo Trophy Gold 300 RUM BTHP 185 Grain [BER300RUM185VLD], HSM Ammo Trophy Gold 300 RUM VLD 210 Grain [BER300RUM210VLD], Norma Ammo Amer PH 300 RUM 180 Grain Oryx 20 Rounds [20174782], Norma Ammo Bondstrike Extreme 300 RUM 180 Grain [20176682], Nosler Ammo 300 RUM 210 Grain AccuBond Long Range [60129], Nosler Ammo Trophy 300 RUM 165 Grain Partition [60064], Nosler Ammo Trophy 300 RUM 180 Grain AccuBond [60065], Nosler Ammo Trophy 300 RUM 180 Grain E-Tip Lead-Free [60067], Remington Ammo 300 RUM 180 Grain PSPAF [RS300UM1], Remington Ammo 300 RUM Core-Lokt PSP 150 Grain [RL300UM1], Remington Ammo Core-Lokt 300 RUM 180 Grain Core-Lokt PSP 20 Rounds [27641], Remington Ammo HTP Copper 300 RUM 180 Grain TSX BT [HTP300UM], Remington Ammo Scirocco Bonded 300 RUM 150 Grain Swift Scirocco Bonded 20 Rounds [27950], Remington Ammo Scirocco Bonded 300 RUM 180 Grain Swift Scirocco Bonded 20 Rounds [27936], Armscor Ammo 300 RUM 180 Grain AccuBond 20 Rounds [FAC300RUM180GRABTC], Barnes Ammo vor-tx .300 rem um 165 Grain ttsx bt 20 Rounds [BB300RUM1], Barnes Ammo vor-tx .300 rem um 180 Grain ttsx bt 20 Rounds [BB300UM3], Barnes Ammo Vor-Tx 300 RUM 165 Grain TSX Boat Tail 20 Rounds [21571], Barnes Ammo Vor-Tx 300 RUM 180 Grain TSX Boat Tail 20 Rounds [21539], Barnes Ammo Vor-Tx 300 RUM 190 Grain LRX BT 20 Rounds [29011], Barnes VOR-TX 300 RUM 180 Grain TTSX 20 Rounds [21539], Federal 300 RUM 180 Grain Nosler Accubond in Vital-Shokin 20 Rounds [P300RUMA1], Federal Ammo Vital-Shok 300 RUM 180 Grain Nosler AccuBond 20 Rounds [P300RUMA1], Federal Ammo Vital-Shok 300 RUM Trophy Bonded Tip 180 Grain 20 Rounds [P300RUMTT1], HORNADY 300 REMINGTON ULTRA MAG 220 Grain ELD-X 20 Rounds [8209], Hornady Ammo .300 rum 220 Grain eld-x precision hunter 20 Rounds [8209], Hornady Ammo ELD-X 300 RUM 220 Grain ELD-X 20 Rounds [8209], Hornady Ammo GMX 300 RUM 180 Grain GMX 20 Rounds [8207], Hornady Precision Hunter 300 Rem Ultra Magnum 220 Grain ELD-X 20 Rounds [8209], Hsm Ammo .300 rum 150 Grain sbt sierra game king 20 Rounds [HSM-300RUM-11-N], Hsm Ammo .300 rum 165 Grain sbt sierra game king 20 Rounds [HSM-300RUM-12-N], Hsm Ammo .300 rum 180 Grain sbt sierra game king 20 Rounds [HSM-300RUM-13-N], Hsm Ammo .300 rum 200 Grain sbt sierra game king 20 Rounds [HSM-300RUM-14-N], HSM Ammo Game King 300 RUM 150 Grain SBT 20 Rounds [300RU11N], HSM Ammo Game King 300 RUM 165 Grain SBT 20 Rounds [300RU12N], HSM Ammo Game King 300 RUM 180 Grain SBT 20 Rounds [300RU13N], HSM Ammo Game King 300 RUM 200 Grain SBT 20 Rounds [300RU14N], HSM Ammo Trophy Gold 300 RUM BTHP 168 Grain 20 Rounds [BER300RUM168VLD], HSM Ammo Trophy Gold 300 RUM BTHP 185 Grain 20 Rounds [BER300RUM185VLD], HSM Ammo Trophy Gold 300 RUM VLD 210 Grain 20 Rounds [BER300RUM210VLD], Norma Ammo Bondstrike Extreme 300 RUM 180 Grain 20 Rounds [20176682], Nosler 300 RUM 180 Grain AccuBond [60065], Nosler Ammo 300 RUM 210 Grain AccuBond Long Range 20 Rounds [60129], Nosler Ammo Custom 300 RUM 165 Grain Partition 20 Rounds [60064], Nosler Ammo Custom 300 RUM 180 Grain AccuBond 20 Rounds [60065], Nosler Ammo Custom 300 RUM 180 Grain E-Tip Lead-Free 20 Rounds [60067], Remington Ammo HTP Copper 300 RUM 180 Grain TSX BT 20 Rounds [HTP300UM].

The idea behind these cartridges was that a short, fat cartridge would be more "efficient" than the traditional long, narrow cartridge, as more of the powder column would be in the immediate vicinity of the primer as it detonated.

We carry a wide range of handgun ammo, rifle ammo, rimfire ammo, and shotgun ammo in-stock and ready-to-ship at low prices. The U.S. The resulting case has significantly more capacity than any conventional belted magnum. Midsouth offers great deals on all kinds of 300 Rem Ultra Mag Centerfire Rifle Ammo, also known as 300 RUM ammo. All Remington Ultra Magnums are magnum-length actions. You must have JavaScript enabled in your browser to utilize the functionality of this website.Click here for instructions on enabling javascript in your browser. Please click HERE for more information. Your direct source for hunting, sporting, target, bulk ammunition, magazines and reloading supplies! Compared to the 7mm Remington Magnum, top 7mm RUM loads deliver 25% more energy at 300 yards. The RUM family of cartridges are Delta L problem cartridges, meaning they can present unexpected chambering and/or feeding problems. Overview. There is a long-case line, as well as a shortened version designed to fit a short rifle action (such as a .308 Winchester). Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here... © 2020 Copyright,entire contents by CTD, Inc. Cheaper Than Dirt! Remington 27759 R7RUM01 7MMRUM 150 PSPCL - 20rd Box. The shorter cartridges are known as Remington Short Action Ultra Magnum, RSAUM, RSUM, or SAUM. Everything from custom, match grade, to bulk plinking ammo can be found at low Midsouth prices. Remington Ultra Magnum, or RUM, refers to a "family" of cartridges developed between 1999 and 2002 by Remington Arms.

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